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unsustainably Synonyms
Another word for unsustainably
Choosing another word for unsustainably depends on context, so the synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
• adverb (Context 1)
In a manner or at a rate that cannot be maintained, continued, or supported over the long term without exhausting resources or causing severe harm.
Usage Example
"The region has been drawing water from its underground aquifers unviably for decades."
Strong
unviably
Weak
excessively
• adverb (Context 2)
In a way that cannot be defended, justified, or upheld against criticism or legal scrutiny.
Usage Example
"The defense counsel argued that the prosecution's claims were untenably broad and lacked material evidence."
Strongest
untenably
indefensibly
Strong
unjustifiably
Opposites of unsustainably
The opposite of unsustainably shifts depending on context. Common opposites include:
sustainably
tenably
defensibly
justifiably
viably
• Nearby Words
Cite this Entry
Wordmom. (2026). Synonyms for Unsustainably. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/unsustainably